Flux applying apparatus



ATTO R N EYS Nf- 2, 1954 J. J. MlLLER FLUX APPLYING APPARATUS Filed May 2e, 1952 Nov. 2, 1954 J. J. MILLER 2,693,166

' FLUX lAPPLsImG APPARATUS Filed may 2e 1952 sheets-sheet 2l ATTORNEYS v 'ms-,165'

APPL-mc APPARATUS;

Appx'nqnMay 16,4952, `serial No. 2895981; lcniim'sv (cl: 1182-7);

The invention-.relates to.- apparatusrfor. .applyinguxto circular articles Landfre'fersl .more particularlyto .apparatus frgappl'ying "azcoating of flmmaterialgtoathe. inner surfaces 'ofthebrake anges .of,'.brake.drumshells prior .to the?V centrifugal '.castingpi'brake. linings in .the flanges.`

r['li'efinventic'mdias.for one'of vit'sobjectsthe provisionA ofan .improved fapparatuscomprising, aconveyor for. ad. vanc'1`1g;;theV circulariarticles, means for rotatingrlhe articls.' during .their advance and .means for.; spraying. ux niaterial'jon thearticles `duringl their..rotation..

Th'einvention,hasfonanothen object .to provid.an.im.. proved? apparatusV in.. which a. driven.- ,endlessbeltl ispensV gageab'le with the articles .duringtheirfadvanceto' rotate.. the ,same and the-hangers of;t the` conveyor. are Aconstructed toA jcarryjthe, articlesi tofrom..the-. beltland .toY move .i tliegarticles; over ,thebeltfand'permit theirAA rotation .while v being sprayed." l

The invention has for a further object to provide an improved apparatus vin which the means for spraying the articles operatesiiintermittently fand; is Iautomatically controlled to operate rwhile..thearticles arefinispraying position.

Theses-.and other objects of thefinvention will become?" apparent l from; the, following. descriptionitaken lin?. corrnectiontwithrtheaccompanying..drawings= in which':

Figure llista.side-elevationwithspartsfbroken awayfof a-tlx applying apparatusernbodying 'the'finventiony ".iFlig'ure 2tisan end.elevatinithereotzfwith parts-broken away and in section; Y

Figure 3 is an enlarged cross section on the line 3-3 of Figure 1;

Figure 4 is a diagrammatic view illustrating the dis` charge angles of the spray guns for applying the ux.

The apparatus for applying flux is designed particularly for use in spraying flux upon the inner surfaces of brake drum shells preparatory to centrifugally casting brake linings within the shells. The shells are of the type having webs with central hub receiving apertures and annular brake anges which may be formed with reinforcing ribs. As illustrated in Figures l, 2, 3 and 4, the apparatus comprises the booth 1, the conveyor 2 for continuously advancing the brake drum shells, the belt 3 for rotating the shells during their advance and the spray guns 4 for spraying flux material against the inner sides of the brake flanges of the shells while they are being rotated. A furnace is preferably located in advance of the booth for heating the shells prior to applying the ux coating. The booth has the frame S, the side plates 6 secured to the frame, the end plates 7 also secured to the frame and the dome 8 resting on and secured to the frame and provided with the exhaust stack 10. The conveyor 2 has the I-beam rail 11 extending longitudinally centrally through the upper portion of the booth and supported on its frame, the trolleys 12 mounted upon and movable along the track and the chain 13 connected to the trolleys. The conveyor is endless and the chain is driven in the usual manner to advance the trolleys at a substantially constant speed in the direction indicated by the arrow 14 shown in Figure 1. As shown in the present instance, each trolley 12 has the frame 15, the Wheels 16, and the hanger 17. The frame is formed of side plates having upper portions which embrace the lower flanges of the track and at the upper ends of which are journalled the wheels 16 which rest on and are movable along the lower flanges of the tracks. The lower portions of the side plates embrace and have pivotally connected thereto the bar 18 of the hanger 17 The bar has xedly secured to United States Patent portion of thebelt is engageabler with.. the 'brak'erngcs s o, 2; its lower end the transverse cylindrcallmember '19 ends: offlthiscylindricalf member fhave lixedly; securejcli" thereto the bars' v20 'f which' .extend f upwardly,l beverthe?. transverse member-and diverge with-respect to"eacliother.;i arrdalso ,withj respect itojthe '-bar 18;; Also Atherelarethe: plates 21 atopposite.-sides'otllbar 18 andencirclngvhef; transverse.:memb`er. A19 and xedly secured'y to" this'splteis and" transverse .member." Y I p I They 'upwardly' extending portions of' the barszlli'ar spaced from the plates 21,so that the brakedrumshell" may,` be' mounted ion' the hanger.w att-*opposite sidsroi its dependingbar ,18 'with the vcentrally aperturedwveb's of the slellsrsleeved "overand resti'nggonthei transversev member.` 19g and located between" the bars '20: and-the plates: ZI. an'dj thehrakeyanges of the shells:extendingwawayfonu th'eliangerbar 'andi toward the sides Yofthe* booth..

` The 4b'elt 3 is. endlessY andextends' longitudinally, cena' trall'yof thebooth directlyp'belowthel conveyorranl around. the" pulleysj 22 which arey mounted "on" the" shafts 23 exs'v tendirlg transversely ofl the booth"V and journalledin' tle'f b`earings ;24;; These-,bearings restonan'dfare secured ti'the longitudinalbars 25swhich'infturn'rest onandiare secured to transverse .bars-'of ltherframe; The beltis.' locatedfsothat' itsv upper portion is at `an 'elevation""al:i'ove"y the lower surfaces of the shells in theirnormal puositiiin-1 assumedfduring theiradvancement; As:.aresult"tlie'upper orftheirlreinforcing `ribs and supports" the-shellswh` e, being pulled@ over ltheeupper belt portion; The bel'i'sr driven' sof'tliat its' upperf portinhmoves the*directic'irr of=I 'the'arrowl 26shown' yin Figure l-l and-*opposite Fto direction? of "travel of f the' conveyorT throughi theebootl'i: Ins'detailvoney -of the'shaftsiiz extendsth'rough? th'ebootl andhas securedfto its-outerendf'th'e pulley: 27 `whcl11-srf driven by means of thebelt128f extending'over tl'sfp ullieyl anda pulley upon the drive shaftlofith'e elctri'mo'tor Eaclioffthe spray -guns 4forspraying'fllrmateriluponr th'ejinner surfaces oftheibrakelnges of"'th`e 1brake dutrlsi.s is '1 of conventional construction; eachA spray gun* tli'et: present instance; being a DeVilbissspray guna.v 'Thelspraye "guns, as shown, comprise three-pairs of"gur'xsanountedionSe the frame of the booth with the guns of each pair at opposite sides of the belt 3 and having their discharge axes at the same angle with respect to the belt. The discharge angles for each pair of guns, as shown particularly in Fig. 4, are different to secure better distribution. Thel operation of the pairs of guns is automatically controlled so that one pair is in operation at a time to operate the brake drums in line with the discharge axes of the guns. The control is effected by the levers 30 pivotally mounted on the track 11 and having the cam portions 31 extending downwardly through the notches 32 in the upper anges of the track yfor engagement by the trolley wheels 16. The length of the cam portions controls the length of spraying time. 33 are air valves above the free ends of the levers and mounted on the track and having their inlets connected by the tubing 34 to the source of compressed air and their outlets connected by the tubing 35 and the tubing 36 to the spray guns 4 at opposite sides of the belt 3. The coil springs 37 are located between the levers and the valve stems to open the valves upon l upward camming of the levers and effect operation of the spray guns.

ln operation, with the conveyor 2 and the belt 3 being driven at substantially constant speeds in the directions indicated by the arrows 14 and 26 and with brake drum shells on the hangers 17, the shells after entering the booth 1 are elevated and drawn along the upper portion of the belt and rotated thereby. During the advance of the shells, the trolley wheels 16 successively operate the valves 33 through the levers 30 thereby opening the valves 33 and successively putting the pairs of spray guns 4 in operation to spray ux material on the shells which are opposite the spray guns. The spraying is discontinued when the trolley wheels leave the cam portions 31 of the levers. During the further advance of the shells they are drawn off the upper portion of the belt and again supported by the trolleys.

What l claim as my invention is:

l. Apparatus for applying ux to brake drum shells Patented Nov. 2,119.54.r

having webs with central hub receiving apertures comprising a driven endless belt having an upper portion movable in one direction and engageable with the peripheries of the brake drum shells to rotate the same, a driven conveyor for continuously advancing the brake drum shells in the opposite direction, said conveyor having depending hangers provided with portions extending freely through the central apertures providing for rotation of the shells, said hangers carrying the brake drum shells beyond said belt and drawing the brake drum shells over the upper portion of said belt and means for spraying flux on the brake drum shells while being rotated by said belt.

2. Apparatus for applying flux to brake drum shells having webs .,with central apertures comprising a driven endless belt having an upper portion movable in one direction an'd engageable with the brake drum shells to rotate the same, a conveyor for continuously advancing the brake drum shells in the opposite direction, said conveyor having means extending through the central apertures providing for rotation of the brake drum shells and carrying the brake drum shells beyond said belt and also moving the brake drum shells while in engagement with said belt, a spray gun for spraying flux on the brake drum shells while engaging said belt, a valve for controlling the ow of air to said spray gun and means oplerable by said conveyor for yieldably actuating said va ve.

3. Apparatus for spray coating circular articles comprising an upwardly-facing support engageable with the articles to rotate the same, a driven conveyor for con tinuously advancing the articles in one direction, said conveyor having depending hangers provided with portions rotatably supporting said articles, said hangers carrying the articles beyond said support and drawing the same over said support for engagement therewith to rotate the articles, and means for spray coating the articles whilebeing rotated by said support.

4. The apparatus dened in claim 3, in which said support comprises a driven belt movable in the opposite direction and spaced above the lower portions of the articles thus supported by said hangers whereby to support and elevate the articles upon engagement therewith, and including means operable by said conveyor for controlling said spraying means.

. 5. Apparatus for applying flux to brake drum shells having webs with central hub receiving apertures com. prising a driven conveyor adapted to continuously advance the brake drum shells in one direction along a predetermined path and having depending hangers provided with portions extending freely through the central apertures of the brake drum shells to rotatably support the y same, an upwardly facing support positioned along said predetermined path and spaced above the lower portions of the brake drum shells thus supported by said hangers, thereby to support the peripheries of the shells and elevate and rotate the same as they are drawn over the upper portion of said belt, and means for spraying ux on the shells while being rotated by said belt. v

6. Apparatus for applying flux to brake drum shells having webs with central hub receiving apertures comprising a driven conveyor adapted to continuously advance the brake drum shells in one direction along a predetermined path and having trolleys provided with hangers having portions extending freely through the central apertures of the brake drum shells to rotatably support the same, an endless driven belt positioned along said prervdetermined path and having' an upper portion spaced above the lower portions of the brake drum shells thus supported by said hangers, the upper portion of said belt being movable in the opposite direction and engageable with the peripheries of the shells to support the shells and to elevate and rotate the same as they are drawn over the upper portion of said belt, means for spraying ux on the shells during rotation, and means operable by said trolleys for controlling said flux spraying means.

7. The apparatus defined in claim 6, in which said hangers are pivotally attached to said trolleys for swinging movement about axes extending transversely of said predetermined path.

References Cited in the ile of this patent UNITED STATES PATENTS Number Name Date 1,198,020 Graham Sept. l2, 1916 2,210,187 Ross Aug. 6, 1940 2,345,834 Schweitzer Apr. 4, 1944 2,383,023 Sykes et al.- Aug. 21, 1945 2,463,422 Ransburg et al Mar. 1, 1949 

